the average temperature in Hartford can be expressed as t = f(m) where m is month (January = 1, etc.) and t is the average daily high temperature for the month in degrees F.

Question

1) what is the meaning of f'(m)?
rate of change of the average temperature (in degrees F) as the month changes.

2) what are the units?
temperature/month

3) is f'(3) positive or negative? why?
positive because march is a month where the temperature gets warmer

4) what does it mean to say f'(7)=0?
in month 7 the average temperature stayed the same as the previous month

are my answers correct?

Answer 1

#2 more properly, °F/mo

otherwise, they look good.